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The way I plan to use it is:

  1. Have people send SMS to a number to vote.
  2. On the backend (assuming that the data comes back to my Web server), I will display the voting results on my Web site.
  3. After say 10 minutes, I would like to press a button on my Web site so ONE of the people who sent an SMS earlier receive an SMS saying that person is a winner.

I'm an ASP .Net developer, so I just need an API to code against. One such company I saw that does this (but is limited to US) is:

Do you know any international providers that are similar to Twilio SMS? I'm based in Sydney, Australia.

I've looked through the discussion here but could not find any International provider that does what Twilio SMS does:

Thank you.

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closed as off-topic by dan Jun 11 '14 at 5:48

This question appears to be off-topic. The users who voted to close gave this specific reason:

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Why did you create a new duplicate question instead of just adding information to the existing one? – Lèse majesté Nov 9 '10 at 20:35
I wasn't sure which Q&A forum is active. – Weng Fai Wong Nov 9 '10 at 22:57
This site isn't broken into forums, and when you edit a question, it gets put on the frontpage again. – Lèse majesté Nov 9 '10 at 23:12
up vote 2 down vote accepted

Try a google search, the exact phrase you will be looking for is "International SMS Gateway".

We also use twilio for a couple apps and have to say nothing beats their level of support and developer friendliness. Also contact twilio for a reference. I spoke with them once about SIP programming and they referred me to some great companies.

You can also try cdyne's SMS service.

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cdyne.com/products/sms-notify.aspx – Frank Nov 9 '10 at 4:49
In the end it comes down to Twilio and Tropo. Tropo will expand to Australia soon with Australian numbers for two-way SMS. Meanwhile, I can live with Twilio's US number and that would cost senders more when they SMS to the US number.. probably a maximum of $0.55 per SMS? – Weng Fai Wong Nov 23 '10 at 3:28

A provider supporting both MO & MT messaging (Mobile Originating and Terminating, respectively) is Clickatell. Based on your intentions, I believe you're looking for long code support, which Clickatell definitely does.

Related reading that will assist:

And, of course, my inevitable disclaimer: I am currently employed by Clickatell. Nevertheless (and perhaps directly because of my insight into the messaging engine), I wholeheartedly stand by my recommendation.

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I'm having a look at SMSGlobal right now. Clickatell hasn't responded to my inquiry yet and it has been almost 24 hours! – Weng Fai Wong Nov 9 '10 at 22:57

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